Alexander, AE follis, Carthage mint, AD 308-311. 

Obv: IMP ALEXANDER PF AVG, laureate head right.
Rev: ROMAE AETERNAE AVG N, Roma seated left on throne with 
high ornamented back, holding globe and spear.
Mintmark P star K.

RIC VI Carthage 76 (throne type a); Sear 15087

Rated R5

With permission of Numismatik Lanz München, June 2011.